By PURPLELEC | 27 December 2024 | 0 Comments
Detailed explanation and advantage analysis of DisplayPort Multi-Stream Transport (MST) technology
Since version 1.2 was released in 2010, Multi-Stream Transport (MST) has been an important feature of the DisplayPort standard. The core benefit of MST technology is that it allows users to drive multiple independent displays from a single DisplayPort output source device. The displays can be connected via an MST hub, or connected to each other in a daisy-chain configuration, requiring only a single DisplayPort cable to connect.
MST technology makes it possible to extend the desktop across all monitors, which brings significant advantages to a variety of applications. However, there are some limitations to MST functionality, but for most intermediate or even advanced desktop users, these limitations won't pose much of a problem.

When considering DisplayPort MST solutions, users mainly need to pay attention to the following points:
MST hubs and daisy chain: To take full advantage of MST, the monitor must support daisy chain connections, which means having both DisplayPort input and output ports. The latest DisplayPort 1.2-compatible monitors often support daisy-chaining, while older models may require an additional DisplayPort hub.
Sharing bandwidth between displays: The number of downstream displays in the MST daisy chain is limited. According to the VESA specification, MST can theoretically support up to 63 monitors, but practical applications are limited by the bandwidth of a single DisplayPort port and the capabilities of the graphics card. For example, DisplayPort 1.2 ports have a bandwidth limit of 17.28 Gbit/s, so users may need to adjust the number of monitors based on their resolution.
Operating System Compatibility: In addition to requiring a compatible graphics card, MST-capable monitor, and the latest GPU driver, you also need to consider that only certain versions of Microsoft Windows fully support MST.
MST technology offers multiple advantages in multi-monitor setups. First, MST makes multi-monitor setups simpler and more cost-effective, requiring only one video output and one cable/hub. Secondly, MST provides greater desktop flexibility, allowing users to combine displays with different models and resolutions. However, it is important to note that image quality may suffer due to the need to share bandwidth between displays.

Compared with dual-display KVM switches, MST KVM switches have advantages in cost and flexibility. While dual display KVM switches are typically more expensive and require a suitable graphics card that supports dual/multiple monitors, the MST KVM switch enables a multi-monitor setup with just one output source. However, if your application requires the absolute highest quality visuals, MST may fall short.
Overall, for budget-conscious users who want a dual-monitor or multi-monitor setup, MST-enabled KVM switches offer additional convenience, flexibility, and functionality.
What are the drawbacks of the DisplayPort MST solution?
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